package com.atguigu.dateapi;

import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;

/**
 * @author y.x
 */
public class SimpleDateFormatTest {

    public static void main(String[] args) throws Exception {
		
		/*SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
		
		Callable<Date> task = new Callable<Date>() {

			@Override
			public Date call() throws Exception {
				return sdf.parse("20161121");
			}
			
		};

		ExecutorService pool = Executors.newFixedThreadPool(10);
		
		List<Future<Date>> results = new ArrayList<>();
		
		for (int i = 0; i < 10; i++) {
			results.add(pool.submit(task));
		}
		
		for (Future<Date> future : results) {
			System.out.println(future.get());
		}
		
		pool.shutdown();*/

        //解决多线程安全问题
		/*Callable<Date> task = new Callable<Date>() {

			@Override
			public Date call() throws Exception {
				return DateFormatThreadLocal.convert("20161121");
			}
			
		};

		ExecutorService pool = Executors.newFixedThreadPool(10);
		
		List<Future<Date>> results = new ArrayList<>();
		
		for (int i = 0; i < 10; i++) {
			results.add(pool.submit(task));
		}
		
		for (Future<Date> future : results) {
			System.out.println(future.get());
		}
		
		pool.shutdown();*/

        DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyyMMdd");

        Callable<LocalDate> task = new Callable<LocalDate>() {

            @Override
            public LocalDate call() throws Exception {
                LocalDate ld = LocalDate.parse("20161121", dtf);
                return ld;
            }

        };

        ExecutorService pool = Executors.newFixedThreadPool(10);

        List<Future<LocalDate>> results = new ArrayList<>();

        for (int i = 0; i < 10; i++) {
            results.add(pool.submit(task));
        }

        for (Future<LocalDate> future : results) {
            System.out.println(future.get());
        }

        pool.shutdown();
    }

}
